Device for facilitating the removal of engine-valves.



0. A. HAYS. DEVICE FOR FACILITATING THE REMOVAL OF ENGINE VALVES.

APPLIOATION FILED JUNE 23,1910.

Patented Sept. 27, 1910.

ZULUFK @Hoznug OLIVER A. HAYS, Q1? SOUTHAMPTON, NEW YORK.

DEVICE FDR FACILITATING THE REMQVAL OF ENGINE-VALVES.

Specification of Letters Patent,

ate-titled Sept. 2?, 55110.

Application filed June 23, 1910. Serial No. 568,538.

To all whom it may concern:

Be it. known that .l, ()mvnn A. llnys, a citizen of the United Statesof: An'ierica. residing at Southampton, in the county of Suffolk andState of New York, have invented certain new and useful improve ments inDevices for l acilitating the Removal. of Engine-Valves, of which thefollowing is a specification, reference being had therein to theaccmnpanying drawing.

This invention relates to certain new and useful improvements in devicesfor facilitating the removal of engine valves, such as are retained ontheir seats by springs keyed to the valve stem, and has for its objectto provide novel and effective means for compressing said spring, sothat the key holding the spring, and which is usually tightly driven inthe valve stem, may be easily. and readily removed, thereby permittingthe removal of the valve from its casing, so that the valve or its seatmay be easily ground,

A further object of the invention is to provide a tool of the characterdescribed in which the engine valve will be securely held upon its seatwhile the spring is being compressed, obviating the necessity ofproviding a separate means for holding the valve seated while the springis being compressed.

A still further object of the invention is to rovide means for holdingthe spring in any desired state of compression without the necessity ofmaintaining such pressure by hand.

With the above and other objects in view which will more fully appear asthe invention is hereinafter described in detail, the vention consistsin the novel construction, combination, and arrangement of parts as willbe described, reference being had in such description to theaccompanying drawings forming a part of this specification, and whereinlike numerals of reference will be employed to indicate like partsthroughout the different views, in which Figure 1, is a view inelevation, showing the tool applied for removing a valve from a gasengine, a portion of the latter being shown in section, Fig. 2, is anenlarged View in elevation of the sleeve through which the valve-holdingscrew operates, a. portion of the screw being shown, Fig. 3, is avertical sectional view thereof, and Fig. l, is a view in top plan ofthe bifurcated or forked end of the lever which engages the spring onthe valve stem.

To fully illun-t rate the manner in which the device is used, l haveshown in Fig. 1, a valve casing 5. a valve 6 of the usual type found inexplosive engines, said valve being held on its seat 7 by the tool, andhaving its stem 8 below the valve casing encircled by a spring 9, heldthereon by the usual pin 10. 'lhese parts are all of the usual type, andare shown for illustrative purposes only.

As stated, my device is adapted to be applied'to the valve so that thepin 10 may be removed after the spring 9 has been compressed, and thevalve then removed from the valve casing. The device embodies anurn'ightbar 11, the upper portion of which,

on the rear edge thereof, is provided with Y notches or seats 12, andthe lower end of the bar extended at substantially right angles to thebody thereof and constituting a lever 14, the free end of which isflattened and bifurcated or forked as at 15, so as to straddle the valve,stem as shown in Fig. 1. The underneath face of the forked or claw-end15 is preferably beveled as at 16, to facilitate inserting the clawbetween the lower end of the spring 9 and the pin 10, and the saidclaw-end preferably also, lies in a plane slightly above the body of thelever 14 as clearly seen in Fig. 1, and in position spans or straddlesthe pin 10. It may be desired in some instances to bring the arms orforks of the claw-end 15 closer together so as to permit of engaging theend of a spring of relatively small diameter. Preferably t.here fore, Iprovide a groove 17 at the rear end of the claw-end so that by placingone of the claws edgewise on an anvil and striking the other claw ablow, the claws will be brought closer together in order to insure aseat for the spring end.

Adjustable on the upright bar 11, is an arm 18, provided at its outerend with/an eye 19 which receives said bar, and at its inner end havinga sleeve. 21), through which operatesthe holding-screw 21. The saidholding screw is adapted to engage the valve (3, and for this purpose isprovided on its lower end with a head 22 loosely n'lounted on the screwso that. the head will properly seat on the upper face of the valvewhether or not the screw 21 be in a perfectly vertical line. The

screw works loosely through the sleeve, 20', and is held therein inadjusted position by means of a pair of spring-pressed clamping jaws 23.By this means it will he observ d that the screw may be rapidly moved tothe approximate distance desired during such vision being made for therocking of the bar I 11 in the eye 19, one end wall of the eye beingslightly inclined as seen in Fig. 1, which will permit the canting ofthe bar so as to disengage tooth 2st, and consequent movement of the bar11 through the eye 10.

It will be evident that when the tool is positioned as shown in Fig. 1,and the screw 21 turned downwardly, the valve 6 will be firmly held toits seat, and the claw 15 will compress the spring 9 so that pin 10 maybe removed after which the valve and its stem may be lifted out of thevalve case.

It will also be evident that when the spring has been compressed, itwill be held in this compressed condition so long as desired withoutfurther attention or effort on the part of the operator.

The provision for obtaining rapid movement of the screw through itssleeve witlibut' necessitating turning of the screw in the sleeve, andthe provision for rapid adjustment of the bar 11 through the eye of thearm 18 permits of the device being quickly applied in position and alsoremoved thererom. While I have herein shown and described in detail apractical embodiment of the invention as the same has been used by me inactual practice, it will be observed that various changes may be made inthe details of construction without departing from the general spirit ofthe invention as herein set orth and claimed. What I claim is In adevice of the character described, a bar having a notched edgethroughout a portion of its length and having an angular extension 'atits lower end constituting a lever provided with a claw'end, an armhaving tn eye receiving the notched portion of said bar, a tooth carriedby one wall of the eye to engage one of the notches in said bar, a

sleeve carried by the free end of said arm, a

screw loosely-mounted in said sleeve, and

spring-pressed clamping jaws carried-d) sleeve and engaging said screwto hold latter in adjusted position.

In testimony whereof I afiix my signature in the presence of twoWitnesses.

I OLIVER A. HAYS.

the

Witnesses:

T. G. Downs,

G. Somme.

the v

